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September 21, 2014

September 21, 2014

Posted by **bob** on Sunday, May 1, 2011 at 3:22pm.

What is the maximum height the dolphin can jump?

- math -
**David**, Monday, May 2, 2011 at 5:04pmAssuming this is a calculus question and not a graphical one, you need to solve a simple differential equation in d:

h = 2d - (d^2)/5, so

dh/dd = 2 - 2d/5 = 0 at the maximum, so d=5. But at d=5, h= 2*5 - (5^2)/5 = 10 - 5 = 5. So the maximum height is 5 feet. Not very high, is it? Do check it and see if you agree.

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